How to turn off the message prompt tone of Apple's mobile phone

How to turn off Apple's mobile phone to send short messages;

1, enter the desktop settings;

2. Enter the notification below the settings;

3. Enter the information below the notification;

4. Turn off the license notice or select none for the following notice sounds, and select none for vibration;

You can find the total volume button on the left and dial it down to turn it off.